【简答题】What are the angry letters sent by the company for?
【多选题】以下标号中,属于交流电流回路标号的是( )
【单选题】The company has sent out ______ invitations.
【单选题】The manager of the company sent me a fax saying that he would visit us next spring ______.
【单选题】The manager of the company sent me a fax saying that he would visit us _________ next spring.